<template>
  <div class="search-wrap">
    <input
      type="text"
      :placeholder="placeholder"
      :maxlength="maxlength"
      :value="inputValue"
      @input="searchData($event)"
    />
  </div>
</template>

<script>
// ref 仅仅使用一个数据时使用
// reactive 出来是一个对象
import { ref, computed, watch } from 'vue';

import { useStore } from 'vuex';

import { formatUserDate, getNowDate } from '@/libs/utils';

import getData from '@/services';

export default {
  name: 'SearchInput',
  props: {
    placeholder: String,
    maxlength: Number,
  },
  // 视图中使用的数据和方法，除了属性，都必须通过setup里面return出去

  //传入props，可以访问props里面的值
  setup(props) {
    const inputValue = ref(''),
      store = useStore(),
      state = store.state;
    const searchData = (e) => {
      inputValue.value = e.target.value;

      const field = computed(() => state.field).value;

      if (inputValue.value.length === props.maxlength) {
        getData(store, field, formatUserDate(inputValue.value));
      } else if (inputValue.value.length === 0) {
        getData(store, field, getNowDate(field));
      }
    };

        watch(() => {
      return state.field;
    }, () => {
      inputValue.value = '';
    });

    return {
      inputValue,
      searchData,
    };
  },
};
</script>

<style lang="scss" scoped>
.search-wrap {
  position: fixed;
  top: 0.44rem;
  left: 0;
  z-index: 1;
  width: 100%;
  height: 0.38rem;
  padding: 0.03rem 0.1rem;
  border-bottom: 1px solid #ddd;
  box-sizing: border-box;
  background-color: #fff;

  input {
    width: 100%;
    height: 100%;
    font-size: 0.14rem;
    border: 1px solid #ddd;
    text-indent: 0.1rem;
    border-radius: 0.03rem;

    &:focus {
      border-color: #ed4040;
      box-shadow: 0 0 0.02rem #ed4040;
      transition: all 0.3s;
    }
  }
}
</style>
